Employee and Employer Contributions
The plan likely includes both employee contributions (made with pre-tax dollars) and employer contributions (such as matching funds). It’s common for employers to require a vesting period for their matching contributions, meaning they aren’t fully owned by the employee until a certain number of years of service.
Unvested amounts typically remain with the plan sponsor and cannot be allocated via QDRO. That’s one reason why it’s essential to know who’s entitled to what, and when.

